Device for supplying cleaning solution



w. c. RUSHMORE DEVICE FOR SUPPLYING CLEANING SOLUTION Filed April 12, 1926 ATTORNEY.

Patented Nov. 1, 1927.

UNITED STATES WALTER C. RUSHIVIORE, OF DENVER, COLORADO.

DEVICE FOR SUPPLYIN G CLEANING SOLUTION.

Application filed April 12, 1926. Serial No. 101,332.

This invention relates to a device for use in removing oils, greases and paints from surfaces, and is particularly apphcable for use in cleaning automobiles, locomotives,

machinery, etc.

Heretofore, devices of this character have employed steam and introduced a cleaning liquid into the flow of steam which was carried along and deposited by the steam, thus applving the liquid to but a limited area.

The principal object of this invention is to provide a device of this character which will combine a cleaning solution, in vapor form, with saturated steam and deliver this vapor solution to a nozzle for direct application to the Work, thus resulting in the application of cleaning fluid simultaneously and uniformly to a very large area- Another object of this invention is to provide means whereby the cleaning chemical is kept in constant agitation in its solution so that it will be intimately and uniformly mixed at all times.

A further object is to combine in the 'device, mediums for use in either the removal of paint or the removal of grease so that the device may be readily adapted to IeitherI use. I i

Other objects and advantages reside in the detail construction of the invention, which is designed for simplicity, economy and efficiency. These will'become more apparent from the following description.

In the following" detailed description of the invention reference is had to the accompanying drawing which forms a part hereof. Like numerals refer to like partsin all views of the drawing and throughout the.

description.

The drawing illustrates a side elevation of the complete device, partly broken away to show the interior construction.

My improved installation comprises a storage or receiving tank 10, a delivery tank 11 and paint solution tank 12; The chemicals at present on the market for removing grease and oil are usually in powdered or crystal form. These chemicals are introduced into the tank through a man-hole 13 and the tank is supplied with suilicient water to make a proper solution thereof. Steam may be turned into the tank 10 from a steam main 14 by means of a valve 15.

This steam flows in a jet from an injector 16 at the bottom of the tank.

The injector 16 draws solution from the tank through a by-pass line 17 and forces it back through the tank in a strong stream. This causes an intimate mixing action to take place within the tank, there being a. rising column of the solution in the center of the tank, over the injector 16, and a downward' flow through the by-pass 17. The

valve and injector 16 are only used when mixin a new batch of solution or to agitate a bate 1 which has been standing a consid-v erable length of time.

Solution flows from the tank 10 through a feed line, 18, controlled by means of a valve. 19, to the delivery tank 11. The tank 11 is provided with a similar injector 20 and a.

similar by-pass 21, controlled by means of a by-pass valve 22, so that, a similar agitating or mixing action can be obtained in the solution in tank 11. Steam is admitted to the injector 20 from the steam main 14 through a valve 23.

Within the tank 11, a vertical discharge tube 24 is arranged, extending from a pointimmediately above the bottom of the tank to an ejector 25 adjacent the top thereof. The ejector 25 discharges through a discharge pi e 26, controlled b means of a control va ve 27 to a flexible liose 28 terminating in a nozzle 29 from which, the solution is applied to the work. The delivery tank 11 is also provided with a man-hole 30 for cleanmg purposes and with a water-glass 31 to.

show the liquid level therein. I

In use, the valves 19 and 23 are opened,

causing the injector 20 to draw solution fromthestorage tank 10 and discharge it into the delivery tank 11. has been placed in the tank 11 for the job on hand, the valve 19 is closed and the valve 22 opened. The solution will circulate through the by-pass 21, constantly rising in temperature until it has attained substantially the temperature of the steam in the steam main 14,- when it will also vaporize. When the pressure in the delivery tank 11 has reached a pre-determined point, determined from a pressure gauge 33, the control valve 27 is opened and the vaporized solution flows through the ejector 25 to the nozzle 29, thence to the work." In' flowing through the ejector 25, a vacuum is formed which draws the liquid solution through the discharge tube 24= and introduces it in the form of a fine spray into the solution vapor. The system will operate, however, without the discharge tube 24 since When sufficient solution the vapor itself carries va orized solution,

i delivery tank for a the discharge pipe 26,

the tube" being only emplo tional solution to the nozz e.

The tank 12 contains a paint dissolving solution and is onl employed for removing paint, under whic conditions, the control valve 27 is closed and a steam vvalve 34 opened to admit steam to an'injector 35, similar to to supply addithednjectors previously described. This in- 'ector operates a by-pass 36 for mixing and eating the solution and keeping it in suspension. A'valve 37 admits the solution into thence to the nozzle 29. The solutlon can, depending upon its nature, be introduced as a vapor under pressure or as a solution simply by gravity. When being discharged by gravity, the steam valve 34 is closed and an air relief valve 38 openedto break the vacuum and .allow the- 24 for cleaning or removal. All of the tanks.

are provided with drain valves 41.

While a specific form of the improvement.

has been described and illustrated herein, it is desired to be understood that the same may be varied, within the scope of the apspirit of the invention.

-,Having thus described the invention, what I claim and desire secured by Letters Patent is 1. A device for supplying a a nozzle comprising a tank adapted to contain a solution; an in'ector arranged to discharge into said tank ing pressure to said injector; a feed assage supplying solution to said injector rom an exterior source; a by-pass arranged to supply solution to said injector from said tank; and means for discharging the solution from said tank. I

2. A device for supplying solution to a nozzle comprising the combination of a storage tank; a delivery tank; an injector arranged to discharge into said delivery tank; means for supplying pressure to said injector; a passage for supplying solution to said injector from said storage tank; a second passage for a supplying solution tosaid insolution to means for supply" jector from said delivery tank; and a third passage communicatin between said delivery tank and said nozz e.

' 3. A device for supplying solution to a nozzle comprising a storage tank; a delivery tank; an injector arranged to discharge into i said delivery tank; means for supplying pressure to said injector; a passage for supplying solution to said injector from said storage tank; a by-pass communicating between said delivery tank and said passage andjmeans for discharging solution from said delivery tank to said nozzle.

In testimony whereof, I aifix my signature.

. WALTER O. RUSHMORE. 

